NASA has two final shuttle missions scheduled and is hoping for final funding approval from Congress for one extra flight, before retiring its three orbiters in 2011.

NASA还有计划好的最后两项航天飞行任务，并希望国会通过其经费申请，在2011年“星河舰队”退休前再多进行一次飞行。

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In each mission you can earn extra time to help you to complete the successive missions.

在每个任务中，你可以赚更多的时间来帮助你完成的连续任务。

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The girls were directed to put any extra pennies they might have towards church missions.

女孩们听到教导，要她们节约每一个铜板去帮助教堂搞各项活动。

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It unlocks the bonus squadmate Zaeed, plus a few extra missions and weapons.

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But the field could develop fast, as prototype picosatellites can ride along with other missions at almost no extra cost.

ECONOMIST: Picosatellites

However, there is a growing realisation in the US and UK that allies such as Germany, France and Italy are unlikely to offer significant numbers of extra combat forces, or change the nature of their missions, says the BBC's Caroline Wyatt in Krakow.

BBC: US faces fresh Afghan obstacles